Regular Expressions 101

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Group 1(code|php)

1st Alternativecode

codethe literal text code (case sensitive)

2nd Alternativephp

phpthe literal text php (case sensitive)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Group 2([\s\S]+?)

Character Class[\s\S]+?

+?matches at least one character from the set below:

\sany whitespace character

\Sany non-whitespace character

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\1the text saved by group 1

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Global pattern flags

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

\[(code|php)\]([\s\S]+?)\[\/\1\]

New

[code]here is some code[/code]
[php]here is some other code[/php]
[code]this is malformed[/php]
[php]and so is this[/code]

[code]here is some code[/code]
[php]here is some other code[/php]
[code]this is malformed[/php]
[php]and so is this[/code]